def get_magnitudes(self, *args, **kwargs):
"""Calculate the magnitude of diffraction vectors.
Parameters
----------
*args:
Arguments to be passed to map().
**kwargs:
Keyword arguments to map().
Returns
-------
magnitudes : BaseSignal
A signal with navigation dimensions as the original diffraction
vectors containging an array of gvector magnitudes at each
navigation position.
"""
# If ragged the signal axes will not be defined
if len(self.axes_manager.signal_axes) == 0:
magnitudes = self.map(calculate_norms_ragged,
inplace=False,
*args,
**kwargs)
# Otherwise easier to calculate.
else:
magnitudes = BaseSignal(calculate_norms(self))
magnitudes.axes_manager.set_signal_dimension(0)
return magnitudes
def test_calculate_norms():
norms = calculate_norms([[3, 4], [6, 8]])
assert np.allclose(norms, [5, 10])
